Vibrates and simultaneously discharges a sonic pulse at random intervals every 1-3 minutes, to protect up to 1,000 square metres. Non-patterned vibration offering varied disturbance. Uses a non-wearing, counter-weight design, with an easy to find hi-vis cap. Welfare friendly deterrent that does not harm moles. This product is powered by 2 x 1.5 V D batteries, however the batteries are not included....